Re: My 73 Chevelle turbo LS swap

by Showtime73 Mon Jul 09, 2018 3:47 pm

They are both very nice! How much hp you think the 73 will make?

by alowerlevel Tue Jul 10, 2018 12:51 am

Showtime73 wrote:They are both very nice! How much hp you think the 73 will make?

Thanks, the 73 should be around 350ish @ the wheels on low boost (6-7psi) and 500+ wheel hp turned up (14-15psi).

by alowerlevel Tue Jul 10, 2018 12:57 am

Limey SE wrote:Like it them wheels look real good on the 73

Im already measuring on how to get a bigger tire on the back, the 275/60s just look so small on these cars, might try to squeeze a 295/65 in there.
My 73 Chevelle turbo LS swap - Page 4 Screen12

My 73 Chevelle turbo LS swap - Page 4 Screen12

Same height tire (28") on my 67
My 73 Chevelle turbo LS swap - Page 4 Screen11

by Showtime73 Wed Jul 11, 2018 10:01 am

I agree on the tires, I spent hours and hours looking for the perfect tire and I still think I came up short, literally. Mine are only 26.7, so I know the car will either come down or the tires will get bigger.

by impalamonte Thu Jul 12, 2018 12:08 pm

I installed 295/ 45 's on the rear. Rear spring compressed , I have 3/8" clearance between the sidewall and INNER fender lip.

by alowerlevel Sun Aug 12, 2018 12:02 am

Had both cars out for the towns car show last month

My 73 Chevelle turbo LS swap - Page 4 2018-011

My 73 Chevelle turbo LS swap - Page 4 2018-010

by alowerlevel Sun Aug 12, 2018 12:05 am

Put sound deadner and new carpet in the car after 5 years without any carpet

My 73 Chevelle turbo LS swap - Page 4 2018-012

My 73 Chevelle turbo LS swap - Page 4 2018-013

by alowerlevel Sun Aug 12, 2018 12:08 am

And a new steering wheel

My 73 Chevelle turbo LS swap - Page 4 2018-014

My 73 Chevelle turbo LS swap - Page 4 2018-015

My 73 Chevelle turbo LS swap - Page 4 2018-016

by alowerlevel Sun Aug 12, 2018 12:41 am

Can anyone else see the pics of the ls swap on page 1, or is it just me? If not I guess Ill have to rebuild all the other pages..........cause I can see all the pictures.........

by alowerlevel Sun Aug 12, 2018 1:10 am

Also put a 4" electric cutout on the downpipe, then reduced it down into the single 3" exhaust that was on the car before.

My 73 Chevelle turbo LS swap - Page 4 2018-019

My 73 Chevelle turbo LS swap - Page 4 2018-019

My 73 Chevelle turbo LS swap - Page 4 2018-018

Never thought 3" exhaust would look small...
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2.5" vs 4"
My 73 Chevelle turbo LS swap - Page 4 2017-111

Vid of the cutout while it was being mocked up

by NOMOREWORK Thu Aug 16, 2018 4:47 pm

I just checked all the pictures are there

by Iguy Fri Aug 17, 2018 8:19 am

alowerlevel wrote:Can anyone else see the pics of the ls swap on page 1, or is it just me? If not I guess Ill have to rebuild all the other pages..........cause I can see all the pictures.........

I can't see the pics on page 1 but all of the rest seem to work.

Awesome progress on your turbo build! Thanks for the updates. I'll be interested to see how you get the 4l80e in there, I've read a lot of A-body cars need to modify the transmission tunnel in the floor to get it to fit because it's bigger than the th350.

by NOMOREWORK Sun Sep 23, 2018 9:55 am

When you swap transmissions will you also be swapping rear gears ?

by a-body Tue Dec 11, 2018 10:05 pm

4L80e guy here, you MIGHT have either tunnel bumping or modifications in your future if you don't plan to alter position of the motor. I had my dirty dingo slider mounts all the way forward in the car (2" i think?) and I had to use banjo fittings for the trans cooler lines. The fittings cost about $60, but work excellent. I used a double hump crossmember, and I didn't know until recently pulling the motor and trans that it was bumping my floorboard. It looks like you'll have better luck than me based on this thread though, good luck!

by TrendSetter Tue Jan 08, 2019 1:38 pm

you can fit 315/60-15 drag radials in the stock wheel wells if you roll the lip on the fenderwell. i also ran hoosier qtp 28x14.5-15s for a while on 15x10 wheels with 5" backspace. these cars can hook. back in its prime, my old one would show light under the front left on the street.

by alowerlevel Thu Apr 11, 2019 11:23 pm

Haven't updated this in a while because I really haven't done a thing to the car recently other than drive it, but mostly because I bought a new (to me) truck that I kinda got carried away with buying stereo stuff for. But 2 weeks ago I ripped the 73 apart to put the 4l80e in it, dont really have any good pics right now but heres some random ones.

Put some more gauges in the 73

My 73 Chevelle turbo LS swap - Page 4 2018-110

Doing the shift kit in the 4l80e

My 73 Chevelle turbo LS swap - Page 4 2019-010

Also picked up some M/T 275 pros for it

My 73 Chevelle turbo LS swap - Page 4 2019-011

by alowerlevel Thu Apr 11, 2019 11:46 pm

And the reason not much got done on the '73 is the truck I picked up in october for a deal I couldnt refuse. Its a fully loaded (awd, leather, sunroof, heated seats, etc) 04 Yukon with only 132k miles on it.

My 73 Chevelle turbo LS swap - Page 4 2018-023

My 73 Chevelle turbo LS swap - Page 4 2018-022

Then I proceeded to get a bit carried away buying a whole mess of stereo equipment for it (most of which I still haven't found time to install)

Kenwood 7" in dash screen

My 73 Chevelle turbo LS swap - Page 4 2018-111

100' of OFC 1/0 power and ground wire

My 73 Chevelle turbo LS swap - Page 4 2019-012

My 73 Chevelle turbo LS swap - Page 4 2019-013

Mids and highs amp (90Wx4) to power 2 Morel 6.5" component sets, and the sub amp (2400Wx1) to power the single 15"

My 73 Chevelle turbo LS swap - Page 4 2019-014

Fi audio 15" Q (should be enough for now)

My 73 Chevelle turbo LS swap - Page 4 2018-113

My 73 Chevelle turbo LS swap - Page 4 2018-112

by JF74chevelle Tue Oct 29, 2019 5:07 pm

What did you run for the radiator?

by alowerlevel Tue Oct 29, 2019 6:02 pm

JF74chevelle wrote:What did you run for the radiator?

The tiny stock one that a 73 with a 307 came with. No idea how or why, but it'll run between 195 (fan turns off) and 207 (fan turns on) in traffic in 90* temps all day long. Even with the intercooler and giant trans cooler both in front of it.

My 73 Chevelle turbo LS swap - Page 4 20171010

Here you can see the intercooler and the trans cooler in front of the rad.

My 73 Chevelle turbo LS swap - Page 4 20190910

by JF74chevelle Wed Oct 30, 2019 11:16 am

Great thank you!

by alowerlevel Thu Nov 07, 2019 12:58 am

Got the M/T 275 pros mounted up on the 10" wheels now in hopes of getting it to hook better on the street than the Nitto drag radials did.

My 73 Chevelle turbo LS swap - Page 4 2019-018

275/60 Nittos vs the 275 pros

My 73 Chevelle turbo LS swap - Page 4 2019-021

The 275 pros on 10" wide wheels vs regular old 275/60/15 BFG's radial T/A's on 8" wheels

My 73 Chevelle turbo LS swap - Page 4 20191110

My 73 Chevelle turbo LS swap - Page 4 2019-020

My 73 Chevelle turbo LS swap - Page 4 2019-019

by alowerlevel Thu Nov 07, 2019 1:09 am

Also got the 4l80e in and working

looks huge compared to a th350

My 73 Chevelle turbo LS swap - Page 4 2019-024

Best pics I have of it in the car on this computer

My 73 Chevelle turbo LS swap - Page 4 2019-022

My 73 Chevelle turbo LS swap - Page 4 2019-023

And 70mph @ 1900rpm in OD with the converter locked sure is nice

My 73 Chevelle turbo LS swap - Page 4 20191111

by thatfnthing Thu Nov 07, 2019 10:24 am

That sure is a beast -- did you have to do a lot of work to the tunnel to make it fit?

And it looks like it sits kind of low -- is that just a trick of the camera angle?

by alowerlevel Thu Nov 07, 2019 8:20 pm

thatfnthing wrote:That sure is a beast -- did you have to do a lot of work to the tunnel to make it fit?

And it looks like it sits kind of low -- is that just a trick of the camera angle?

No mods to the tunnel at all. Just flattened out the pinch weld in the bellhousing area a bit to make getting to the bolts easier because the motor is pushed far back. It looks like it hangs down alot lower in the pics than it actually does, the pan is maybe 1/2" below the frame.

by JF74chevelle Fri Nov 15, 2019 5:51 pm

Nice, I picked up a T56 last week. Going to cram that bad boy into my Chevelle. Gonna have to seriously look at what motor mounts to run.

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